Question

Please show work:

(g)       (a)       The first service call scheduled for tomorrow involves servicing 5 copiers. Predict, with a .95 level of confidence, the time that will be required for this service call. Note that you need to use a PI, not a point predictor.

            (b)       Repeat (a) but now assume that the call involves servicing 13 copiers rather than 5 copiers.

            (c)       What key assumption is made when doing the prediction requested in (b) that is not necessary for the prediction requested in (a)?

Data Set

Minutes	Serviced
20	2
60	4
46	3
41	2
12	1
137	10
68	5
89	5
4	1
32	2
144	9
156	10
93	6
36	3
72	4
100	8
105	7
131	8
127	10
57	4
66	5
101	7
109	7
74	5
134	9
112	7
18	2
73	5
111	7
96	6
123	8
90	5
20	2
28	2
3	1
57	4
86	5
132	9
112	7
27	1
131	9
34	2
27	2
61	4
77	5

Answer 1

ANSWER:-

• We use the R Command to find the confidence interval:

a)

b)

C)

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